<template>
  <el-menu
    default-active="2"
    class="el-menu-vertical-demo"
    @open="handleOpen"
    @close="handleClose"
    :collapse="isCollapseFn"
    background-color="#545c64"
    text-color="#fff"
    active-text-color="#ffd04b"
  >
    <h3>{{ !isCollapseFn ? "通用后台管理" : "后台" }}</h3>
    <el-menu-item
      v-for="item in noChildren"
      v-bind:key="item.label"
      v-bind:index="item.label"
      @click="clickMenu(item)"
    >
      <i v-bind:class="`el-icon-${item.icon}`"></i>
      <span slot="title">{{ item.label }}</span>
    </el-menu-item>
    <el-submenu
      v-for="item in hasChildren"
      v-bind:key="item.label"
      v-bind:index="item.label"
    >
      <template slot="title">
        <i v-bind:class="`el-icon-${item.icon}`"></i>
        <span slot="title">{{ item.label }}</span>
      </template>
      <el-menu-item-group>
        <el-menu-item
          v-for="subItem in item.children"
          v-bind:key="subItem.label"
          @click="clickMenu(subItem)"
        >
          <i v-bind:class="`el-icon-${subItem.icon}`"></i>
          <span>{{ subItem.label }}</span>
        </el-menu-item>
      </el-menu-item-group>
    </el-submenu>
  </el-menu>
</template>
<script>
import { mapGetters } from 'vuex'
export default {
  data () {
    return {
      menuData: [
        {
          path: '/',
          name: 'home',
          label: '首页',
          icon: 's-home',
          url: 'Home/Home'
        },
        {
          path: '/mall',
          name: 'home',
          label: '商品管理',
          icon: 'video-play',
          url: 'MallManage/MallManage'
        },
        {
          path: '/user',
          name: 'User',
          label: '用户管理',
          icon: 'user',
          url: 'UserManage/UserManage'
        },
        {
          label: '其他',
          icon: 'location',
          children: [
            {
              path: '/page1',
              name: 'page1',
              label: '页面1',
              icon: 'setting',
              url: 'Other/PageOne'
            },
            {
              path: '/page2',
              name: 'page2',
              label: '页面2',
              icon: 'setting',
              url: 'Other/PageTwo'
            }
          ]
        }
      ]
    }
  },
  computed: {
    noChildren () {
      return this.menuData.filter(item => !item.children)
    },
    hasChildren () {
      return this.menuData.filter(item => item.children)
    },
    ...mapGetters('tab', ['isCollapseFn'])
  },
  methods: {
    handleOpen (key, keyPath) {
      console.log(key, keyPath)
    },
    handleClose (key, keyPath) {
      console.log(key, keyPath)
    },
    clickMenu (item) {
      if (this.$route.path != item.path && !(this.$route.path === '/home' && (item.path === '/'))) {
        this.$router.push(item.path)
      }

    }
  }
}
</script>
<style lang="less" scope>
.el-menu-vertical-demo:not(.el-menu--collapse) {
  width: 200px;
  min-height: 400px;
}
.el-menu {
  height: 100vh;
  border-right: none;
  h3 {
    color: #fff;
    text-align: center;
    line-height: 48px;
    font-size: 16px;
    font-weight: 400px;
  }
}
</style>